At the end of March 1918, Hangard was at the junction of the French and Commonwealth forces defending Amiens. From 4 to 25 April, the village and Hangard Wood were the scene of incessant fighting, in which the line was held and the 18th Division were particularly heavily engaged. On 8 August, the village was cleared by the 1st and 2nd Canadian Mounted Rifles. The original extension to the communal cemetery was made by the Canadian Corps in August 1918. It consisted of 51 graves in the present Plot I. It was greatly increased after the Armistice when graves were brought in, mainly from the battlefields of Hangard and Hangard Wood and from smaller cemeteries.  The extension now contains 563 Commonwealth burials and commemorations of the Great War. 294 of the burials are unidentified but there are special memorials to eight casualties known to be buried among them. Other special memorials commemorate nine casualties buried in Fontaine-les-Cappy Churchyard Extension and Gentelles French Military Cemetery, whose graves could not be found on concentration. Certain graves in Plots II, III, and IV, identified collectively but not individually, are marked by headstones inscribed with the words "Believed to be buried near this spot.".